text: export class DocumentPreview {
  
      constructor(type, size, filetype, caption, url, key, downloadUrl, filename) {
          this.type = type;
          this.size = size;
          this.filetype = filetype;
          this.caption = caption;
          this.url = url;
          this.key = key;
          this.downloadUrl = downloadUrl;
          this.filename = filename;
      }
  }
  
  